messaging params default to true when defaulting to false makes more sense.

auto-create-addresses
auto-create-queues
auto-delete-addresses
auto-delete-queues

all default to true.

For migration from EAP 6 to EAP 7 this does not make sense as they were not in EAP 6 so a default of false will ensure this functionality remains off as EAP 6.

If it is decided to keep them as true then there should be some text in the migration guide to state it is recommended considering setting these to false to keep the same functionality as in EAP 6.